SocialPipeline 03/05/2012 (p.m.)

• Social entropy - Wikipedia, the free encyclopedia

  • A related economic model is proposed by Thomas Homer-Dixon and by Charles Hall in relation to our declining productivity of energy extraction, or Energy Return on Energy Invested or EROEI. This measures the amount of surplus energy a society gets from using energy to obtain energy.

     

  • An EROEI of more than ~3, then, is what appears necessary to provide the energy for societally important tasks, such as maintaining government, legal and financial institutions, a transportation infrastructure, manufacturing, building construction and maintenance and the life styles of the rich and poor that a society depends on.

• Fuel Thermodynamics

  tags: Entropy

  • What is the  Second Law of Thermodynamics? In any spontaneous  process there is always an increase of entropy in the  universe (system plus surroundings). A process is  spontaneous if the result is an increase in disorder.  Cigarette smoke, from the tip of a lit cigarette can be  detected from room to room, across the restaurant, in  seconds. This is because the odiferous combustion  molecules spontaneously distribute themselves to a state  of disorder. You cannot spontaneously reverse the process  and force them all back into the cigarette. The process  goes only one way.

     

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